90 Running PowerLine in Direct Control Mode
Sparge
Determines the rate at which the system sparges the eluent reservoirs.
To set the sparge rate:
1. Move the cursor to the Sparge field.
2. Type the sparge rate value (0 to 100 mL/min). Press Enter.
Note: The system uses the sparge rate for all eluent reservoirs that you enable on the
Pump Setup screen. Use an initial high sparge flow rate and then reduce it to a low
maintenance rate. The sparge method you use depends on your analytical requirements.
See Appendix B, Eluent Considerations, and Chapter 3, Preparing Your 600E System for
Operation, for more information.
Temp
Controls and maintains a stable column-operating temperature. The range of temperature
within which the column heater can operate is listed on the heater label. The Temp value
must be less than or equal to the high-temperature limit programmed on the Pump Setup
screen (see Section 4.3.2, Setting Pump Setup Parameters).
Note: If there is no column heater installed in the 600E system, the Temp field displays a
value of None.
To set the optional column heater temperature:
1. At the Temp field, type the appropriate temperature for the chromatography that you
wish to run. Valid values are 0 to 99 °C.
2. Press Enter.
Note: Verify separation methods that require elevated temperatures at those
temperatures.
5.1.2 Setting External Event Switches
S1, S2, S3, S4
The Direct Control screen allows you to manually operate external devices by setting the
S1 through S4 external switch parameters.
Use S1 through S4 on the controller rear panel to control devices such as fraction
collectors, switching valves, or other non-PowerLine components.
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